Table 2.

Antibacterial activities of antimicrobial peptides and antibiotics against microorganisms.

Peptides	Minimum Inhibitory Concentration (μg·mL−1)
	Gram-Negative Bacteria								Gram-Positive Bacteria
	E. coli	A. baumanii	CRAB C1	CRAB C2	CRAB C3	CRAB C4	CRAB C5	GM 1	S.aureus
PapMA	32	32	32	32	16	64	32	34	64
PapMA-2	64	128	128	>128	64	>128	128	146	>128
PapMA-3	16	16	16	16	16	32	16	18	32
PapMA-4	16	8	8	8	8	16	8	10	32
PapMA-5	16	16	16	16	16	32	16	18	32
PapMA-6	16	8	8	8	8	16	16	11	32
melittin	8	16	16	16	16	8	16	14	16
Antibiotics
Imipenem	0.25	0.25	64	64	64	64	64	46	1
Meropenem	0.25	0.25	128	64	64	128	64	64	1
Rifampin	2	4	128	64	128	128	256	101	1
Erythromycin	16	32	>512	512	512	>512	>512	592	0.25
Vancomycin	128	256	256	256	256	512	256	274	0.5
Linezolid	256	256	256	256	256	512	512	329	1

¹ The geometric means (GMs) are the mean minimum inhibitory concentration (MIC) values of Gram-negative bacterial strains. The GMs were assumed to be 256 μg·mL⁻¹ for MIC > 128 μg·mL⁻¹ and 1024 μg·mL⁻¹ for MIC > 512 μg·mL⁻¹.